Cutter for film take-up magazines



D. W. M ARTHUR CUTTER FOR FILM TAKE-UP MAGAZINES Dec. 22, 1953 2 Sheets-Sheet 1 Filed Sept. 29, 1950 INVENTOR. 43mm Whom @0414, Q. 6am

ATTORNEY.

Dec. 22, 1953 D. w. M ARTHUR 2,663,514

CUTTER FQR FILM TAKE-UP MAGAZINES Filed Sept. 29, 1950 2 Sheets-Sheet 2 INVENTOR. 0mm M 7120M 0041!, 62. [5M ATTORN EY Patented Dec. 22, 1953 CUTTER FOR FILM TAKE-UP MAGAZINES Donald Wesley McArthur, Salt Lake City, Utah,

assignor to Film'sort Inc., a corporation of Delaware Application September 29, 1950, Serial No. 187,516

Claims.

This invention relates to photographic apparatus and more particularly to roll film cameras which are especially adapted for photographing documents, letters, drawings, etc, on microfilm.

One of the objects of the present invention is to provide a novel, simple and effective camera structure for photographing documents of different sizes on a film strip of uniform width.

Another object of the invention is to provide a novel camera of the type defined which is capable of selectively photographing documents of different sizes such that the images of said documents will be closely spaced on the film to eliminate waste of film.

Another object is to provide a camera structure wherein the exposed portion of a film strip may, through the provision of novel cutting means and light-sealing means, be severed at any desired time from the unused portion of said film strip and removed from the camera for developing purposes.

Still another object is to provide a camera having a removable take-up magazine for the exposed portion of a film strip, said camera and said magazine having registerable openings in opposed walls thereof for the passage of the exposed film strip therethrough into the magazine, and also including novel cutting members effective to light-seal said openings and sever the exposed portion of the film strip from the unused portion thereof upon removal of said magazine from said camera.

The above and further objects and novel features of the present invention will more fully appear from the following detail. description when the same is read in connection with the accompanying drawings. It is to be expressly understood, however, that the drawings are for the purpose of illustration only and are not intended as a definition of the limits of the invention.

In the drawings, wherein like reference characters refer to like parts througout the several views,

Fig. 1 is an enlarged front elevational view of a camera and film take-up magazine with the front cover plate of said camera removed and magazine is rotated relative to the camera preparatory to the removal therefrom; and

Fig. 7 is fragmentary vertical sectional view on the line 1-1 of Fig. 3.

Referring to the drawings, wherein there is shown by Way of example, one form of photographic apparatus embodying the present invention, 2%? indicates generally a camera which is preferably adapted for photographing documents,

letters, books or other copy on roll film. As shown, the camera 26 comprises a rectangular casing 28 which is open at both ends thereof and is provided intermediate said ends with a wall 29 which divides said easing into a front com partment 3i! and a rear compartment (not shown), The front compartment 38 is normally closed in light-tight relation by a cover plate (not shown) which is removably secured to the front edge of the casing 28 by a suitable thumb screw (not shown) which projects through a suitable opening in said cover plate and is threaded into a suitable threaded opening 3 3 formed in the dividing wall 29. Y

Disposed within the front compartment 30 and bolted or otherwise suitably secured to the bottom wall of the casing 28 adjacent the right-hand end thereof, is an exposure housing 31 provided centrally thereof with a rectangular-shaped bore 38 extending vertically therethrough. Clamped between the housing 37 and the bottom wall of the casing 28 in coaxial relation with the bore '38 in said housing is a flanged cylindrical shell 39 which projects downwardly beyond said housing and said wall through a suitable opening in the latter. Slidably fitted for relative telescopic movement within the shell 39 is an adapter 40 within which is suitably secured an objective 4|. Secured in the wall of the adapter 451 is a pin 42 which projects radiallytherefrom into an inclined cam slot or groove t3 formed in the wall of the shell 39, said pin and slot arrangement providing for adjustment of the objective 4| toward and away from the casing 28 to properly focus said objective with respect to the copy to be 3 photographed which rests on a suitable support spaced below the camera 28.

Bolted oro-therwise suitably secured to the upper surface of the exposure housing 37 is a film Supporting and guiding plate 45 formed with a rectangular shaped exposure aperture (not shown) which is located centrally with respect to the optical axis of the obective 4i and the axis of the bore 38 in said housing, the upper fiat surface of said plate forming the focal plane for said objective. J ournalled in suitable bearings in the housing 31 and extending at right angles to the direction of movement of the film strip over the guide plate 44 are two parallel shafts 46 and 4"! which are equally spaced at opposite side's of the axis of the bore 38 in saidhousing and are located beyond the ends of the exposure aperture and out of the optical path of the objective 4!. Disposed within the bore 38 of housing 3'1 and suitably secured to the shafts 46 and ll for pivotal movement thereby toward and away from the guide plate 44 are two cooperating shutter flaps 48 and as. The shutter flap 49 is secured to shaft ll and is made longer than the shutter flap 48 which is secured to shaft 4% so that when both said flaps are swung in unison toward each other and toward the guide plate M, as hereinafter described, to their normal positions shown in'- Fig. 1, flap 49 will underlap fiap 58' and thus completely cover the exposure aperture and prevent exposure of the film overlyingsaid aperture and said plate. When the flaps 43' and as are swung in unison away from each other and the guide plate it completely out of the optical path of theobjective 4|, the exposure aperture will be substantially fully uncovered for a predetermined interval, resulting in exposure of substantially I the entire area of the film within said aperture to receive an image of the document or other copy, said exposure being referred to as a full exposure or a full frame exposure. The free' underlapp'ing" end of the longer shutter fiap 49 is offset downwardly the thickness of the shorter shutter flap is so that both of said flaps will lie in a single plane and parallel with the guide plate 44 when in overlapping position and the exposure I aperture is completely covered thereby, as above described.

Loosely' mounted on the shafts and ll and overlapping and straddling theshutter flaps 48 and 49 on said shafts are two cooperating auxiliary flaps 59, one only being shown, and these auxiliary fiaps are of equal length, but are made shorter than the shutter flaps 48 and '59 an amount such that when said auxiliary flaps are disposed in parallel relation with the guide plate- 44, one-quarterof the exposure aperture at each end thereof will be covered or masked by said auxiliary flaps, while the remaining central onehalf of said aperture will not be covered by said fiaps. The portions of the shutter flaps 48, t9- notoverlapped by the auxiliary fiap Eli are pref erably, but not necessarily, offset upwardly the thickness of said auxiliary flaps so that said portions will lie in the same plane as the auxiliary flaps and form in effect a continuation thereof to further insure complete closure of the exposure aperture. The auxiliary flap as is,- through themedium of suitable yieldable connections such as torsion springs (not shown), connected with the shafts 45 and Al for movement thereby away from the guide plate as, and to permit rotary movement of said shafts relative thereto, said springs being engaged ever the shafts and each having one end thereof anchored 4 to its respective shaft and the opposite end engaged with its respective fiap.

It will thus be apparent that with the construction thus far described, when the shutter fiaps 48, B9 are swung away from the guide plate 54 by the shafts 46, 4?, the auxiliary flap 59 is also moved with said shutter fiaps away from said plate by said shafts through the torsion springs so that the exposure aperture is fully uncovered for the making of a full size exposure on the film, as hereinbefore described. When the shutter flaps" 48; W are returned by the shafts Q6, Q1 to their. original positions after the making of a full size exposure on the film, the auxiliary fiap is likewise returned with and by said shutter flaps. It will also be apparent, however, that when the'auxiliary flap 5B is held, by means to be presently described, in the position shown in Fig. i and against movement with the shutter flaps 48, 49 away from the guide plate A l in effecting an exposure on the film, one-half of the expcsure aperture will remain covered by said auxiliary flaps, thus reducing said exposure aperture to one half of its normal effective length and masking substantially one-half of the area of the film which would otherwise be exposed. Ami-- cordingly, cnlythat reduced area of the film confined by the opposed edges of the auxiliary flap 5S and uncovered by the central one-half of the exposure aperture will be exposed toreceive thereon the image of the document or-other copy when the shutter fiaps 48, were actuated, said reduced exposure being referred to as a one-half size exposure or a one-half frame exposure. The auxiliary flap 50 is employed when photographing small copy sheets within the lirriitsof the re-' duced film area afforded by said flaps, thus con: serving film and provide for a greater number of exposures on a given length of film.

Means under the control of the operator are provided for holding the auxiliary fiap 5B in the position shown in Fig. 1 when'maki'ng one-half size exposures on the film, andfor' permitting movement of said fiap with the shutter flaps 48, 49 when making full size exposures on said film. As shown said auxiliary-fiap-holding means comprises a vertically extending rod 5% disposed within thefront compartment til arid guided for axial sliding movement in a sleeve and a block 55 which are alsojd'isposed within said compartment. The sleeve 55 is suitably se-' cured to the top wall of the casing 28, and the block 56 is suitably secured to' the dividing wall 29 of said casing. The lower end of the rod 55' projects into the bore 38 in the exposure housing 31 through a suitable opening provided in the filth guide plate 4 i. The rod 55 is located rear WaIdIy bybnd the bath of movement of the filth iover the guide plated! and beyond the optical path of the objective. lll

Rotatabl-y carried by the rod 54' at the'lcw'er end thereof is a horizontal control plate 51 extending. lengthwise of the housing 31 and disposedbelow tabs formed errand extending r'ear wardly froin' the' auxiliary fiap 5B. The plate 57 is prevented by the housing 37' from rotating with the rod 54' and relative to said housing. The plate 51 is yieldingl'y ur ed upwardly into en} easement with the tabs of tlie' auxiliary flap 50 to hold the auxiliary flaps in operative position, by a compression coil spring 60 surrounding the rod 54 and having one end thereof engaging against the film guide plate 44 and the opposite end engaging against a washer 6! which, in turn, engages an annular shoulder on said rod.

When making a full size exposure onthe film, the rod 54 is moved downwardly by the operator to release the auxiliary fiap 58 by the plate 51 and bring the latter to the position shown in Fig. 1 beyond the path of pivotal movement of said flaps. For this purpose, the rod 54 projects beyond the top of the casing 28 and is provided at its upper end with a manipulating knob 62. The rod 54 is provided with a radially projecting pin 53, and the sleeve 55 is provided with an axially extending slot 64 opening outwardly through the lower end thereof. The pin 63 is adapted to enter the slot 64 when the rod 54 is raised by spring 60 to its uppermost auxiliary flap-holding position, and is adapted to move out of said slot and into engagement with the lower edge of said sleeve when said rod is lowered to its lowermost auxiliary-flap-releasing position and is then rotated by the operator a few degrees in either direction. Engagement of the pin 63 with the lower edge of the sleeve 55 holds the rod 54 and plate 5'! thereon in their lowermost auxiliary-fiap-releasing positions while full size exposures are being made on the film. When half size exposures are to be made on the film, the operator turns the rod 54 until the pin 53 thereon is aligned with the slot 64 in the sleeve 55, whereupon said rod is raised by the expanding action of the spring 60 and the plate 5'! is engaged with the tabs on the auxiliary flap 59 to hold the latter in raised operative position, and against downward movement with the shutter flaps 4B, 49.

If desired, the control plate 51 for holding the auxiliary flap 50 in raised operative osition when making half size exposures on the film, may

be electrically operated by a simple substitution of an electromagnetic device in lieu of the long manually operated rod 54, the sleeve 55, and the spring 60.

A supply strip 68 of unexposed film of a suitable size and type well known in the art, such as mm. sensitized cellulose acetate film, is wound on a reel 65 with the emulsion or sensitized side of said film facing the center of said reel. The reel 69 is disposed within the front compartment 30 and is rotatably mounted on a pin 'Hl which is suitably secured in the dividing wall 29 adjacent the upper left hand side of said compartment. The strip film 68 is drawn from the top of the reel 69 and threaded over a rubber-covered film-feed roller H and between the latter and two pressure rollers 12 and '73 which cooperate with said feed roller and are spaced about the periphery thereof. From the feed and pressure rollers H and l2, 13 respectively, the film strip 63 is directed over the guide plate 44, over the exposure aperture, and through the focal plane of the objective 4|, and then passes into a light-tight take-up magazine E4, to be hereinafter described, which is removably mounted on the casing 28 at the right hand side thereof, and wherein the exposed portion of said film may be permitted to recoil itself or may be wound on a take-up reel 15, as desired.

The film feed roller H is disposed within the front compartment 30 between the reel 69 and the exposure housing 31, and is fixed on a spindle 16 which is journalled in a suitable bearing in the dividing wall 29. The pressure rollers 12, 13 are disposed between and journalled on two inter-' connected arms I1 and 18 which are pivotally mounted on a pin 19 suitably secured in the dividing wall 29. The pressure rollers l2, '13 are yieldingly urged toward the feed roller Hand held in engagement with the film strip 68 by suitable resilient means, such as an extension C011 spring having one end thereof connected to the dividing wall 29 and the opposite end con-.

nected to the arm 18.

Disposed within the front compartment 30 and above the film guide plate 44 is a pressure plate 8| which cooperates with said guide plate to hold the film strip 68 flatwise against the upper surface of the guide plate during each film exposure operation. This pressure plate BI is mounted for pivotal movement on a headed stud 82 (Figs. 1 and 2) so that it Will assume a position paral lel with the guide plate 44 to firmly press the portion of the film strip 68 engaged thereby against said guide plate. The stud 82 projects through a suitable clearance opening in a block 83 secured to the pressure plate Bi, and is suitably se-' cured in the free end of a horizontal arm 84 which is fixed on one end of a pin 85 that is journalled in a suitablebearing in the dividing .wall 29. A compression coil spring 35 surrounding the stud 82 and disposed between the head on said stud and the block 83 on the pressure plate 8| serves to yieldingly press said block against the arm 84 so that a frictional drag will be imposed upon the pressure plate 8| to hold it against relative pivotal movement on the stud 82 and, hence, out of contact with the film strip 68 when said plate is lifted to release said film strip for further movement after an exposure has been made thereon.

Suitable drivin means are provided for operating the shutter flaps 48, 49, the feed roller H, and the pressure plate ill in proper timed relation with each other during each cycle of operation of the camera, and since said driving means per se forms no part of the present invention it is believed to be unnecessary. to illustrate and describe the same. It is pointed out, however, that the driving means is located within the rear compartment of the camera, and that the shutter flaps, feed roller, and pressure plate will be operated by said driving means in the following sequence to effect a single exposure on the film strip 65 of the document or other copy. The pressure plate 8| will be first moved into engagement with the film strip 68 extending over the guide plate 44 and the exposure aperture to firmly press it against the upper surface of said guide plate. Then, the shutter flaps 48, 49 will be moved away from the guide plate 44 to uncover the exposure aperture so that an exposure of the document or other copy will be made on the film strip 68, the auxiliary flap 50 moving with said shutter flaps when the exposure is to be full size and not partaking of such movement when the exposure is to be halfsize. Then, the shutter fiaps '48, 49 will be returned to their original positions to again cover the exposure aperture. Then, the pressure plate 85 will be moved out of engagement with the film strip 58 and returned to original position to release said film strip for further feeding movement. And, then, the feed roller II will be rotated a predetermined extent to feed a predetermined amount of film strip 68 depending on the length of the exposure aperture and the size of the exposure on the film strip controlled by the auxiliary flap 59 so as to bring the exposed portion of the film strip a slight distance beyondthe leading edge of the exposure aperture, or the free edge of the auxiliary fiap 5% which is carried by the shaft 41 as the case may be, and to bring an unexposed portion of the film strip into ex posure position, thus completing one cycl ofv operation of the camera and restoring the parts 7 t6 starting. pesi-tiofi in readiness for the next exposure at which time the above deseribe'd 015 erations will be repeated.

As the exposures, full size and/or half size, are successively made 'on the film'sti'ip ea aiciig the length thereof and Said film Strip is ihte'r mittently advanced over the guide plate M dur' ihg" successive cycles of operation of the camera 26-, the exposed Leading portion of the film strip passes straight forward f em said came a into the take-iii; magazine it wheres; it may be per ted to f'etidil itself er he wpund on the reel 15, as desifed. As will a pear here ihft'ei', the" camera 25 andihagalne M areboth piovideeijw'ith net/e1 c-uttihg' means foi severin the Stiipfi at the exit side of said camera and at the inlet side or said megazme ween e; ii-i'evai er the latter from the camera, said cutting means also acting to simultaneously close the filrii outlet and inlet passages in the earner-a and magazine, respectively, so that no light will eriter the camera and the magazine to fog the filiii tliieii'lg In this manner, the exposed fidltidii of the film strip 68 in the magazine '54 may; at any desired time, be separated from the iiiius'ed portion- 613 said film stri in the eamera 26' and removed from said camera toa dark room for developing purposes.. V

AS shown, the casing 28 of the camera 2'6 is provided in the wall at the right-hand side thereof with a horizohtal transverse film' oi tlet 'or' discharge passage Isd of rectangular ior'n'i'ati'qn aligned with the guide plate at and into which a narrow portion of said plate extends. Bolted or otherwise suitably secured to the casme Wall having the film outlet passage I34 there in arid forming apart of said wall exteriorsthereof is an aimul'ar' block 235. This block tee is fo'rh'ie'd at the outer end and for a major per; tid'n of the diameter thereof with a recessed face I36 having therein two diametrically opposite airciiate grooves I31 and I33 located adjacent the peripheral edgethereof, and a horizb'i'italtiansvers'e film outlet or discharge paissage f3? of rectangular f rmat'ien; (es-tending a thrdflgh the block and registering with the filth outlet passage 134*. v I

Disposed within the outer e'ridof the block I35 and suitably secure'd to the face I35 thereof is an annular plate I ii! which is provided with a hofizonta'l transverse film o itlet or scharge fiassage Mt of ie'ctangular formation-registerifig with the film' out1et passage its. aid with two diametrically opposite arc xate slots- I'? M3 registering with the grooves 53? and I 38; resea atively. The slots M2, M3 are of a width test time the width of the grooves 13?, 1st and t 1 iiiixiateat diametrically opposite 'eii'cls therecji iii circular openings I45 and IE5, respectively, of 3f the grdoves- I31, Isa. The plate its; like the Block I55, forms a part of the camera casing 28', the Slots I42, I43 in Said plate fOrfil in lfi') lliidlfilit g rdbv's if! Said bl'dl. Likewise, the

fegiste'riiig passages ass, lie and I'I in the wall is:

6f; Casifig 23 in the bldfik I35 and in the" plate M50,- respectively, providing il'l efifi dischargefor outlet passage in said casing Disposed.- within the 0111581 fl'd 6f fih 5166K F3 5 and having sliding Contact with the" {Slate 1 ejfi'd' said} plate and is thfeade'd into a suitable diameter substantially equal to" the Width (3f tion shown ir'i Fig. 3 wherein it W1 me, the portion o f the filfn strip '63 prjojct1 a threaded opening in the Block 135'. .The knife 1-41 is formed-with a cutting edge i158 adapted to co'ofaerate with the upper edge of the film out let passage MI also formed as acutting edge in severing the portion of the-film strip 68 that has passed from thecam'era casing '28 beyondthe plate I48 andsaid knife through the passages I34, I3? and I41; The knife I46 isprovide'd for a purpose to appear hereafter,- with a cir'cular opening I49 located adjacent the periphery thereof and registeringwith the slot Item the plate 2 59, said opening beihg of a diameter substantially the same as the diameter of the openin-g I65 at the end of said slot. The knife I46 is further firovided adjacent the periphery there'- of with two circumferentially spaced smaller diiii'ii'igs' 1511' mid I51 which are adapted to r= cei v therein a spring-pressed ball-detent I52 carries by the sleek I and projecting through a suitable clearahee ophing iii the plate use, Saidball detefit h'eifig' of a larger diamti' than the diameter of said openings. The plate I has fiiied theiiri ashoi't pin I53 which is ti aifls'fverse'ly aligned with the film outlet pas age m ahdis located at the side of the pivotal axis M] of the knife I66 opposite said passage, sate 51's jo'roje'ctihg rom the'blate H9 over ana s vens the hiiife It's for a biirb'ose' to appear hereafter.

When the magazine is is"- pi'hp'er film re; ce'ivi'ng position on the settlers rig zs'g s'shown in Fig. 1, the knife IE6 is- (115160 I the fiosi he hated that said knifeis co'mplete'ly clear of the iiirr'i outlet passage HH and out of the path er adventmg movement of the filx'ii strip 68'; that thefe'iitting edge me Of the knife is disposed ;I' lose to and parallel the passage I; and tait the ball 'detent I52 is en aged inthe ope hh g J51 in theknifeto holcl the latter in said positio and against accidental displacement. these conditions, the stripes inaf-y'freely pass without ohstriictioh irqih the cairfie'ra throiigh the 's'sages I34, I39: E 24; ever the knife H6; and ih'td them-seating. It will be epearent that when the knife I516 is rotated, however; in 9; clockwise i ectich ee viewed in ig; 3,- ii-em the'positioh thereof showfi in said figure to the position sh ws in e; mannresd t ifieenste be se js entit desciib'el, th euttie edge I of aidigmfe' will pass in a aresatje path upwardly ans along the up'p'eifciitting edgjeof the passage 43 ffo'm thfloiitr e d 15 the iriiiei efid er said passage and th n beyqhd the latt'ei, the may of the knife will be disposed over t e entire pess age' MI, an theqq i l-setent 52' win he engage'd'ii'i' the'p'pehihg I56 ih said khi felto hold the atter in actuated pess mand against aeeiderit'a'l dishlace'nieht. Under these an b on jtiie' plate [40 and receivedin t e mag zinelA will be seteres atthe exit side ti he c ani'era by thee re rat and way sshearmg acti'dn from the rern'aini'rig umi portion of said strip in said camera, and e; fi1mDa's'sag I 31 Wi P 99 3 5 5331 $16555 312 in li h tight relation to prevent all l-iglijt' from efiterifig the camera casing iB th'rong'h' the passages Ml,

I39, I34 and fogging and dam i the remain ing unused portion of the film strip 68 therein.

lifidricalf casing 5'4- disposd at right angles to the camerac'asing' 28' and having a fear wall I and a froht' cover plate I56" re'mbva'bly mounted; theieo fi. The casing- I54 provided at the top and setters thereof with latches I51" which are e suitably secured thereto exteriorly thereof and are adapted to engage ears I58 formed on and projecting from the cover plate I56 for retaining said plate on said casing in light-tight relation. The casing I54 has formed integrally therewith a hollow film-inlet neck portion I59 disposed at right angles thereto and at the lefthand side thereof, as viewed in Fig. 1, said neck portion communicating with the interior of said casing and being open at the outer end thereof. and having its axis disposed above the axis of the casing I54, to facilitate recoiling of the film, strip 60 in said casing or winding of said film strip on the take-up reel 15. The casing I54 is provided with a shaft I60 which is journ'alled in a suitable bearing in the rear wall I55 of said casing, said shaft being formed with a square prtion I6I projecting into the casing I54 and on which the reel 15 is non-rotatably mounted.

The reel 15 is rotated by suitable means (not shown) in unison with the rotation of the film feed roll-er H to wind the exposed leading portion of the film strip 68 thereon as said film strip is advanced during successive cycles of operation of the camera. When it is desired to eliminate the take-up reel 15 and permit the film strip 58 to recoil itself in the magazine casing I54, the reel 15 is simply removed from the shaft I60 and from said casing.

Bolted or otherwise suitably secured to the neck portion I59 of the magazine casing I54 at the outer open end thereof is an annular closure or Wall plate I65 which is provided with a relatively wide, horizontal transverse film inlet passage I55 (Fig. 1) of rectangular formation registering with the film outlet passage I4: in the plate I 4-0. Bolted or otherwise suitably secured to the outer face of the plate I65 is an annular block I 61 (Figs. 1, 4, and 6) which isformed at the outer end and for a major portion of the diameter thereof with a recessed face I60. Formed in the face I68 of block I61 and extending through said block is a horizontal transverse film inlet passage I 69 of rectangular formation registering with the film outlet passage MI in the plate I40 and with the film inlet passage I66 in the plate I65, said inlet passage I69 being of a, width less than the width of said inlet passage I66. Disposed within the outer end of the block I61 and suita'bly secured to the face I68 thereof is an annular plate I19 which is provided with a horizontal transverse film inlet passage I1I of rectangular formation registering with the film outlet passage I4I in plate I40 and with the film inlet passage I59 in block I61, said inlet passage I1I being of a width less than the width of said inlet passage I69 and of the same width as said outlet passage MI. The film strip 68 in passing from the camera 26 into the magazine 14, thus passes through the passages I34, I39, I4I, I1i, I69 and. I65.

Suitably secured in the block I61 are two latchbolts or pins I12 and I13 which are located diametrically opposite each other and project outwardly from said block through suitable clearance openings I14 in the plate I10. The 'bolts I12 and I13 are each formed at the outer end thereof with an enlarged head I15 having an annular groove !16 therein (Fig. 7). The bolts I12, I13 cooperate with the plate I40 in the camera block I35 to hold and lock the take-up magazine 14 on the camera 26 in light-tight relation and with the magazine block I61 slightly telescoped into the camera block I35, as shown in Fig. 1, to form a light-tight joint between said .4. blocks. The bolt I 13 further serves to actuate the film severing knife I46 on the camera. Accordingly, when the magazine 14 is in proper film receiving position on the camera casing 28, as shown in Fig. l, the bolts I12, I13 will be disposed at the extreme left and right-hand ends respectively of the arcuate grooves I31 and I 38, as shown in Fig. 3, afforded by the arcuate slots I42, I43, the openings I44, I45 at the opposite ends of said slots, and the opening I49 in the knife I46, at which time the outer portions of the heads I15 of bolts I12, I13 will be engaged in the arcuate grooves I31, I38, the plate I40 will be engaged in the annular grooves I16 in said heads, and the inner portion of the head I15 of the bolt I13 will be engaged in the opening I 40 in the knife I46, all as shown in Fig. 3 and as shown in Figs. 1 and '7 with respect to the bolt I13. Thus, the magazine 14 is held and locked by the bolts I12, I13 on the camera casing 28 in proper film receiving position with the passages I1I, I69 and I66 in said magazine in alignment with the passages I4I, I39 and I34 in said casing.

Disposed within the outer end of the magazine block I61 and having sliding contact with the plate E10 is a semi-ciroular plate-like knife I11 (Figs. 1, 4 and 6) which is pivotally mounted centrally of said block on a stud 919 which projects through suitable clearance openings in said knife and said plate and is threaded into a suitable threaded opening in the block I61. The knife I11 is formed with a cutting edge 419 and with a relatively thick portion I60 spaced below and parallel with said cutting edge. The cutting edge I19 on knife I11 is adapted to cooperate with the lower edge of the film inlet passage Ill in plate I16 also formed as a cutting edge in severing the relatively short portion of the film strip 68 disposed in the space between the blocks I35, I31 from the portion of said film strip that has passed into the magazine casing I54- through the passages I1I, I69 and 556. The thick portion I830 of knife I11 is adapted to cooperate with a similar thick portion I on the camera knife I46 in bridging the space between the plates I40, I10 and in guiding the leading edge of the film strip 68 into the inlet passage I11 upon initial movement of said film strip into the magazine 14. The knife E11 is provided with a circular opening I02 which is transversely aligned with the pivotal axis 516 of said knife and is located at the side of said axis opposite the cutting edge I19 on the knife. The block 561 is provided with a spring-pressed pin-detent I83 which is yieldingly projected outwardly through the face I66 of said block and through a suitable clearance opening in plate I10 toward the knife I11.

When the magazine 14 is in proper film receiving position on the camera casing 20, as shown in Fig. l, the knife I11 is disposed in the position shown in Fig. 4 wherein it will be noted that the cutting edge I19 of said knife is disposed slightly above and parallel with the upper edge of the film inlet passage I'll in the plate 10, that theupper surface of the thick portion I00 of the knife is disposed slightly above and parallel with the lower cutting edge of said passage, that the pin I53 on the camera plate I40 is engaged in the opening I82 in the knife I11, and that the detent-oin I03 is engaged with the body of said knife. Under these conditions, the filmstrip 66 may pass freely without obstruction from the camera 26 into magazine 14, initially and thereafter, through the passages I34, I39, I4I,'over the knife I46 and the thick portion IBI thereof, under the knife through the passages i'II, I69 and H56.

Assuming now that an exposed portionof the film strip 68 has been passed from the camera -26 into the magazine I4, and that it is desirous to immediately develop said exposed film portion. With the magazine is in the position shown in Fig. l, and with the parts of the film severing means in the positions shown in Figs. 3 and 4, the operator grasps the magazine and turns it in a clockwise directiomlooking from the right of Fig. 1, until the latch-bolts I72, I'I3 reach the extreme right and left-handends respectively or the armate grooves I31, E38 and are alined with the openings 'Il, I55 at'said ends respectively ofthe arcuate slots I 32, M3, as shown in Figs. 5' and 8.

When the magazine 'a'llis so turned by'the operator, the camera knife I46, through engagement of the head I75 of the latch-bolt I73 in the opening I49 in said knife, is rotated by said bolt to the position shown in Fig. 5, thus severing the filmstrip 68 at the exit side of thecamera and closing the film outlet passage Mi, as previously described, and the magazine knife iii, through engagement of the fixed pin I53" in the opening I82 in said knife, is held stationary, but the lower cutting edge of the film inlet passage iii in the magazine plate Ill) is moved in an arcuate path upwardly relative to the cutting edge ii? on said stationary magazine knife along said latter edge from the outer end to the inner end thereof and then beyond the same to the position shown in Fig. 6 at which position the'body of the stationary magazine knife I'i'i is disposed over the entire film inlet passage Ill, thus severing the portion of the film strip 68 received in the magazine i l at the inlet side of said magazine and completely closing the inlet passage III in light-tight relation to prevent all light from entering the magazine casing I54 through the passages I'Ii, its, E65 and fogging and damaging the exposed portion of the film strip 68 therein.

The magazine M may now be removed from the camera 26 by a straight outward movement thereof and then taken to a dark room for removal of the exposed film portion therefrom for developing purposes. When the magazine I4 is turned to the position shown in Fig. 6, as above described, the detent-pin [83 is positioned in alignment with the opening I82 in the magazine knife I11, and when said magazine is removed from the camera 26, said detent-pin snaps into said opening and thereby holds said magazine knife in passage closing position and against accidental displacement.

When the magazine M is replaced on the camera 26 after removal of the exposed portion of the film strip 68 therefrom, the latch-bolts I12, I13 are engaged in the arcuate grooves I37, I38, respectively, through the openings Hi l, I-45 in the plate I 40 and the opening I49 in the camera knife I46, and the pin I53 on' said plate is engaged in the opening I82 in the magazine knife I 11 and moves the detent-pin I33 out of engagement with said opening. The magazine 14 is then turned by the operator in a counter-clockwise direction (Fig. 5) until the latch-bolts I12, I13 reach the extreme opposite ends of the arcuate grooves I37, I38, whereupon said magazine will be held and locked to the camera casing 28, the camera knife [46 will again occupy the position shown in Fig. 3- and thefilm inletpassage II=-i-' on the magazine The camera 26 is provided with, signali means for audibly indicating to the operator that the supply of strip film 68 on the. reel 69 is substantially depleted and: needs to be replenished. As shown in Fig. 1, said signal means comprises a feeler arm I84 which is pivotally mounted; as at I85, within the front compartment 30' onthe dividing wall 29 and-rests by gravity on the roll of strip film 68 on the reel" 69. Adjustably secured in the arm I84 is a contact member I8iiin the form of a machine screw whichisadapted to make contact with a contact bracket I81 when the supply of strip film 68 on the reel 69 is substantially depleted, said bracket being disposed below the arm I84 and suitably secured to the dividing wall 29'. The arm' I84 and bracket I81 are insulated from the'wall Ziland are connected in an electric circuit to a bell or buzzer (not shown). Included in the electric circuit to the bell or buzzer is normally closed manually operable switch (not shown), and a normally ex tinguished signal light (not shown) under the control of said switch.

When the bell or buzzer is sounded through depletion of the supply of strip film 58 on the reel 69' and resultingengagement of the contact member I86 with the contact bracket I87", the switch is manually operated to open the electric circuit to the bell or buzzer and stop the same, and'to close the electric circuit-tothe signal flight to illuminate the same until the camera 26' has been reloaded with a new rollof s'trip'filni and said switch has been reset to circuit closing po sitioii.

Although only one embodiment of'the present invention'has been illustrated in the accompanyg ing drawings" and described in'the' foregoing specification, it is to be understood that said invention is not limited to said embodiment; Various changes may be made therein, particularly in the design and arrangement of the parts illustrated, as well as in the mode of operation and manner of use, some of which have been mentioned in the foregoing specification, without departing from the spirit and scope of the inventiotn, as will now be clear to those skilled in the ar What is claimed is:

1. In a photographic camera, a casing within which exposures may be successively made On and along the length of strip film and having a transversely disposed film discharge passage in a wall thereof, a film take-up magazine mounted on said casing wall for removal, therefrom through relative rotation thereof about an axis extending parallel to the direction of movement or the film out of said casing and into said maga- Z1118, said magazine having in the opposed wall thereof a transversely disposed film inlet passage registering with said discharge passage, the edge of said discharge passage at one side of the film bemg formed as a cutting edge, and the edge of said inlet passage at the other side of the film being formed as a cutting edge, a knife plate mounted on said casing. wall exteriorly thereof for relative pivotal movement, a knife plate mounted on said magazine wall exteriorly' thereof for relative pivotal movement, said knife plates being disposed clear of said discharge and inlet passages to enable the film to pass through the latter into said magazine; and means on said casing wall and said magazine wall and engaging said magazirie knife plate and's'aid casing knife 1 the cutting edge thereof and for holding said magazine knife plate stationary when said magazine is rotated in one direction for removal from said casing whereby the film is severe-d at the discharge and inlet passages and said passages are closed by said knife plates to exclude light from entering said casing and said magazine, said last-named means on said magazine wall also serving to cause rotation of said casing knife plate clear of said discharge passage when said magazine is rotated in the opposite direction and said passages are aligned in the mounting of said magazine on said casing.

2. A photographic camera as defined in claim 1, wherein said knife plate holding and rotating means comprises respectively a pin on said casing wall and engageable in an opening in said magazine knife plate, and a pin on said magazine wall and engageable in an opening in said casing knife plate,

3. A photographic camera as defined in claim 2, wherein said pin on said magazine wall is provided with an annular groove which cooperates with an arcuate undercut groove in said casing wall for locking said magazine in position on said casing when said discharge and inlet passages are in alignment and said knife plates are disposed clear of said passages, and for releasing said magazine for removal from said casing when said knife plates are disposed over said passages and the film has been severed thereby, said groove being enlarged at one end thereof to receive said pin.

4. A photographic camera as defined in claim 3, comprising a spring-pressed detent carried by said magazine wall and engageable in the opening in the magazine knife plate for holding the latter in actuated film severing and passage closing position when the magazine is removed from the casing, and a spring-pressed detent carried by said casing wall and engageable in a, separate opening in said casing knife plate for holding the latter in actuating film severing and passage closing when the magazine is removed from the easing.

5. In a photographic camera, a casing within which exposures may be made successively on and along the length of an intermittently advanced strip of film and having a transversely disposed film discharge passage in a wall thereof, said passage having an edge thereof at one side of the film strip formed as a cutting edge, a film take-up magazine mounted on the casing adjacent said wall for removal from said casing through relative rotation thereof about an axis extending parallel to the direction of movement of the film strip out of said casing and into said magazine, said magazine having a transversely disposed film inlet passage in a wall thereof opposed to said casing wall, said inlet passage normally registering with said discharge passage, a knife plate operatively mounted on said casing wall exteriorly thereof and at the side of the film strip opposite the cutting edge of said discharge passage, and means on said magazine wall and operatively connected to said knife plate for moving the latter relative to said casing wall across said discharge passage and the cutting edge thereof when said magazine is rotated relative to the casing in the removal thereof from said casing, whereby the film strip is severed at said discharge passage and the latter passage is closed by said knife plate to exclude light from entering said casing.

6. A photographic camera as defined in claim 5, wherein said knife plate is pivotally mounted on said casing wall, and said knife plate moving means comprises a pin secured in said magazine wall and projecting into a clearance opening in said knife plate.

7. A photographic camera as defined in claim 6, comprising a spring-pressed detent carried by said casing wall and engageable in a separate opening in said knife plate for releasably holding the latter in actuated film-severing and passage-closing position.

8. In a photographic camera, a casing within which exposures may be successively made on and along the length of an intermittently advanced strip of film and having a transversely disposed film discharge passage in a wall thereof, a film take-up magazine mounted on the casing adjacent said wall for removal from said casing through relative rotation thereof about an axis extending parallel to the direction of movement of the film strip out of said casing and into said magazine, said magazine having a transversely disposed film inlet passage in a wall thereof opposed to said casing wall, said inlet passage normally registering with said discharge passage and having an edge thereof at one side of the film strip formed as a cutting edge, a knife plate mounted on said magazine wall for relative movement, said knife plate being located exteriorly of said magazine wall and at the side of the film strip opposite the cutting edge of said inlet passage, and means on said casing Wall and engaged with said knife plate for holding the latter against movement with said magazine when the latter is rotated relative to the casing in the removal thereof from said casing, whereby the film strip is severed at said inlet passage and the latter passage is closed by said knife plate to exclude light from entering said magazine.

9. A photographic camera as defined in claim 8, wherein said knife plate is pivotally mounted on said magazine wall, and said knife plate holding means comprises a pin secured in said casing wall and projecting into a clearance opening in said knife plate.

10. A photographic camera as defined in claim 9, comprising a spring-pressed detent carried by said magazine wall and engageable in said clearance opening for holding said knife plate in film passage-closing position when the magazine is removed from the casing, said detent being adapted to be disengaged from said opening by said pin when said magazine is operatively positioned on said casing.

DONALD WESLEY MCARTHUR References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,344,207 Miles June 22, 1920 1,764,450 Hindle June 17, 1930 2,095,849 Wittel Oct. 12, 1937 2,298,574 Lockhart Oct. 13, 1942 2,492,900 Swenson Dec. 2'7, 1949 2,496,329 Briechle et a1. Feb. 7, 1950 

